Automobile window lifter



Oct. 7, 1924. 1 1,510,551-

- C. W. HOLSTEIN ET AL AUTOMOBILE WIIS DOW LIFTER le pril 14. 1923 I5 Sheets-Sheet l I 1 1 DR. @242 Oct. 7 1924.

C. W. HOLSTEN ET AL AUTOMOBILE WINDOW LIFTER Filed A ril 14.

1923 s Sheets-Sheet Oct. 7, 1924 1,510,551

C. W. HOLSTEIN ET AL AUTOMOBILE WINDOW LIFTER Filed April 14. 1923 3 sheets-sheets 1 v NT'ELR.

Patented Get. 7, 1924.

UNITED" srr Tar so e.

CHARLES w. HOLSTEIN AND'WILLIA1YI o. anon, on TOLEDO, OHIO, ASSIGNORS 'ro GEORGE B. STORER, JR, or TOLEDO, OHIO. V

AUTOMOBILE WINDOW LIFTEB.

Application filed April 14, 1923. Serial No. 631,976.

To all whom it may concern:

Be it known that we, CHARLES W. HOL- STEIN and WILLIAM C. GRoB, citizens of the United States, and residents of Toledo, in

the county of Lucas and State of Ohio, have made an Invention Appertaining toan Automobile Window Lifter, which invention is fully set forth in the following specification.

Our invention has for its object to provide an efficientwindow lifting device which is so constructed that the window will be lifted by the rotation of a crank handle, and wherein the force applied to lift the window will be substantially the same, ex-

cept for direction of application, as the force required to lower the window, means hein provided whereby the window will be held secure in the position in WlllGll it is placed.

The invention may be contained in W111- dow raising structures of different forms adaptable for automobiles. To illustrate a ractical application of the invention we ave selected one or two such structures as examples and shall describe them hereinafter. The structures are shown in the accompanying drawings.

Figure l of the drawings is a sectional view of a door frame having a window therein. Fig. 2 is an inside view of the door, the decorative or finishing material being removed; Fig. 3' is a side view of the mechanism for raising and lowering the window. Fig. 4 is an edgeview of the mechanism shown in Fig. 3. Fig. 5 is a sectional view of part of the mechanism and shows, particularly, the manner of connection of the window frame with the raising and low,- ering mechanism. Fig. 6 is a sectional view taken on the line 6-6 indicated in Fig. 4;. Fig. 7 illustrates the interior of a casing that encloses an actuating gear. Fig. 8 is a view of a modification showing a tension spring for causing frictionally engagement of parts of the mechanism to hold the window in the positionin which it is placed. Fig. 9 ;isan edgeview .o-f thedevice illustrated in Fig. 8. Fig. 10 is a sectional View taken'on the line 10-10 indicated in Fig. 8. Fig. 11 is a thirdmodification of the invention, wherein a torsional spring is used to cause interengagement of the parts to hold the window in its adjusted position. Fig. 12 illustrates the spring used in the construction illustrated in Fig. 11.

1, in Figs. 1 and 2, is the frame of the door in whichthe window and the mechanism for operating the same, is to be located, it being understood that the window and mechanism may be located in any part of the automobile; The mechanism for raising an lowering the window is supported in a shell 2,v which is secured to the frame of the door in the particular case selected for purposes of illustration. The shell 2 is connected at its upper end to a casing 3 in whichis located a worm gear wheel 4: that operates upon the worm 5.

The worm 5 is connected toa screw 6, and a crank 27 is connected to the worm wheel 4. Rotation of the crank 27 in either direction causes rotation of the screw 6.

A slide 7 is threaded on to the screw 6 and is movable in the shell. 2. It is guided by the shell 2 in its movements along the;

frame. The slide 7 is provided with channels S in which turned edges 9 of the shell 2 are located. The edgeportions 9 prevent rotation of the slide 7 with the screw 6. The slide'f is thus caused to move up and down the frame when the screw 6 is rotated.

A plate 10 is secured 'to the slide 7 and is soshaped as to'suppo-rt the window 11. The plate 10 is bent so as to form a shoulder 12 on which the edge of the window will rest. The window is provided with a channelled bar 13 that extends across the lower edge of the window and an elastic latch membef l l is secured to the channelled member 13. The plate 10 has a' recess 15 through which the latch member 14 extends, so that it;may engage beneath the shoulder 12, as shown in Fig. 5, when the window 11 is placed in position to be supported by the plate 10 and the slide 7. -When it is desired. to remove the window from the mechanism all that is necessary is to pullit sufi'iciently to overcome the yielding resistance of the spring latch 14. Y

A nut or block 16 is also located on the screw 6 in close proximity to the slide 7. A. 7

spring member interconnects the block and the slide so as to cause aclamping action or binding relation between the screw, the slide and'the block andso that when the screw is released after rotation thereof by the crank the three parts will interlock and hold the window in the position to which it may be raised or lowered by the operation of the screw. In the form of construction shown in Figs. 1 to 6 inclusive, a bent band spring 1.7 is connected to the plate 10 by any suitable means, and also to the block 16. The spring is shaped so as to engage the ear 24, to press against the shoulder 12 on opposite sides of the latch 14, and to engage the lug 25 of the block 16. The spring is bent so as to cause the block 16 to rotate clockwise looking from above the block, so that when the screw is rotated clockwise the friction of the screw on the block 16 will tend to loosen the block 16 from the slide 7, and when it is rotated in the opposite direction i will tend to tighten the block and the slide on the thread of the screw. When it is rotated in the first direction the window is lifted by the rotation of the screw. Then the screw is rotated in the opposite direction the window is lowered. The tightening occurring between the slide 7 and the block 16 is suflicient to overcome the perceptible difference that would otherwise occur between lowering the weight of the window and raising the weight of the window. Thus the physical strength required to raise and lower the window is substantially the same. The effect is to produce a more uniform action when the window is operated, either in raising or lowering the window. When the window is raised or lowered, the spring 17 will operate to cause the block 16 to clamp the slide 7 sufficiently to securely hold the win dow against lowering by reason of any undue jarring to which automobile windows are ordinarily subjected when the automobile moves over the road since the downward movement of the window would be trans mitted through the slide and the screw to the worm gear wheels 1 and 5,-and any rotation of the screw would tighten the block 16 against the slide so as to prevent perceptible movement of the screw in the slide.

In the form of construction illustrated in Figs. 8, 9 and 10, a tension spring is used to interconnect the slide 7 and the block 16 to produce the binding action between the two.

The tension spring 28 is connected at one end to the ear 19 formed on one side of the plate 10 and to a lug or projection 20 formed also at one side of the block 16. The spring 28 is so positioned as to rotate the block 16 to cause it to clamp together the contiguous surfaces of the slide 7 and the block 16. The functionof the tension spring 28 is substantially the same as that of the band spring 17 in the construction shown in Fig. 3.

In the form of construction illustrated in Figs. 11 and 12s the elastic binding means consists of a spring that surrounds the screw. The spring 21 is provided with ends 22 that are located substantially on the same side of the axis of the screw and between the block 23 and the slide 7, whereby the block 23 and the slide 7 are yieldingly forced apart by the spring 21 on one side of the aXis of the screw. This, yieldingly, holds the window in a position that it may be raised or lowered, and causes the slide 7 of the block 23 to bind on the screw. In order that the engagement may be maintained the ends of the spring 21 may be turned and the slide 7 and the block 23 may be provided with openings to receive the turned ends of the springs. Also the spring is twisted counterclockwise to produce the yielding turning movement of the block in the same direction that the springs 17 and 28, in the construction shown in Figs. 3 and 8 operate the blocks. Consequently rotation of the screw in one direction will release the binding action between the threaded member produced by the spring 21, while rotation in the reverse direction will cause the slide and block to engage with the thread of the screw with a greater friction, thus operating not only to maintain the window in the position to which it may be raised or lowered, notwithstanding the arring that occurs in the driving of the automobile, but also produce the uniform effect in raising or in lowering the window, as described above.

We claim:

1. In a window lifting device, a window supporting member, a block, a screw extending through the member and the block, means for rotating the screw, an elastic means interconnecting the member and the block for rotating the block on the screw relative to the member to cause releasement when the screw is rotated to raise the window and frictional engagement when the screw is rotated to lower the window.

2. In a window lifting device, a window supporting member, a block, a screw extending through the member and the block, means for rotating the screw, an elastic means interconnecting the member and the block for rotating the block on the screw relative to the member to cause release-ment when the screw is rotated to raise the window and frictional engagement when the screw is rotated to lower the window and to lock the member to the screw when the screw is at rest.

3. In a window lifting device, a window supporting member, a block, a screw extending through the member and the block, an elastic means interconnecting the member and the block for causing frictional engage ment between the screw and the member and the block.

- 4-. In a window lifting device, a window supporting member, a block, a screw extending through the member and the block, a bent spring interconnecting the member and the block for causing frictional engagement to the member to cause releasement when 10 between the screw and the member and the the screw is rotated to raise the window and block. frictional engagement when the screw is 5. In a window lifting device, a window rotated to lower the window. supporting member, a'block, a screw extend- In testimony whereof, we have hereunto ing through the member and the block, signed our names to this specification. means for rotating the screw, a bent spring interconnecting the member and the block CHARLES W. HOLSTEIN. for rotating the block on the screw relative WILLIAM C. GROB. 

